Titfield+Thunderbolt+Pack+1.0.2.zip is a release file of the Minecraft resource pack The Titfield Thunderbolt (GWR 14xx)- IR, made for Minecraft 1.12.2. It was published on April 18, 2020 and is 21.2 MB in size. For the full description, screenshots and every other version, visit the The Titfield Thunderbolt (GWR 14xx)- IR resource pack page.
How to install: Put the .zip into .minecraft/resourcepacks (do not extract it) and enable it under Options → Resource Packs.